Practical Byzantine Fault Tolerance is often a consensus algorithm released in the late 90s by Barbara Liskov and Miguel Castro. pBFT was designed to work efficiently in asynchronous(no higher bound on when the reaction on the request will be acquired) methods. It is actually optimized for low overhead time. https://financefeeds.com/top-cryptocurrencies-to-buy-today-17th-june-3-coins-backed-by-strong-fundamentals-and-adoption/